6 Relation of the model to some other formalisations

6.2 Mixed defeasible inheritance networks

Mixed defeasible inheritance networks have strict and defeasible links between nodes. Basically in the lack of information from strict inheritance relations (corresponding to is-a relations), one can make deductions via the defeasible links under certain conditions (chiefly that the inference is not undermined by an inference with priority over it). Thus defeasible inference networks can be seen as an approximation of the enhanced network models where unconditional relations are mapped onto strict inheritance links and conditional ones to defeasible relations. In this case the logic of such inheritance networks can be seen as the logic of what one might infer from context-dependent knowledge when you do not know the present context.

A Simple-Minded Network Model with Context-like Objects - Bruce Edmonds - 13 FEB 97

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